Polyribonucleotides induce nitric oxide production by human monocyte-derived macrophages
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چکیده
منابع مشابه
Selective Mycobacterium avium-induced production of nitric oxide by human monocyte-derived macrophages.
Infection with a virulent strain of Mycobacterium avium, but not with virulent Mycobacterium tuberculosis or avirulent Mycobacterium smegmatis, induced the formation of nitric oxide by human monocyte-derived macrophages. This process was not affected by lipopolysaccharide or cytokines such as interferon-gamma or tumor necrosis factor alpha. M. avium-induced nitric oxide production was significa...
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Bighorn sheep are more susceptible to respiratory infection by Mannheimia haemolytica than are domestic sheep. In response to bacterial challenge, macrophages produce a number of molecules that play key roles in the inflammatory response, including highly reactive nitrogen intermediates such as nitric oxide (NO). Supernatants from monocyte-derived macrophages cultured with M. haemolytica LPS we...
متن کاملEffect of Neutrophils on Nitric Oxide Production from Stimulated Macrophages
Background: During the initial phase of an infection, there is an upregulation of inducible nitric oxide synthase in the macrophages for the production of nitric oxide. This is followed by the recruitment of polymorphonuclear leukocytes (neutrophils) which release arginase. Arginase competes with inducible nitric oxide synthase for a common substrate L-arginine. Objective: To investigate whethe...
متن کاملKinetics of Nitric Oxide Production and MTT Reduction by HSV-1 Infected Macrophages
Background: Macrophages have important role in defense against Herpes Simplex Virus type-1 (HSV-1). The present study was performed to determine the viability and nitric oxide (NO) production by HSV-1 infected mouse peritoneal macrophages (HIM). Method: The viability of macrophages was evaluated using MTT reduction assay and the production of nitrite using Griess method. Results: The ability of...
متن کاملChlamydia pneumoniae proteins induce secretion of the 92-kDa gelatinase by human monocyte- derived macrophages.
Chlamydia pneumoniae, an intracellular Gram-negative respiratory bacterium, and macrophages are present in inflammatory tissue sites such as atherosclerotic lesions, where abnormal degradation of the extracellular matrix takes place. To evaluate the potential of C pneumoniae for participation in matrix destruction, we studied the effect of this bacterium on the production of 3 matrix-degrading ...
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ژورنال
عنوان ژورنال: Journal of Leukocyte Biology
سال: 1997
ISSN: 0741-5400
DOI: 10.1002/jlb.62.3.369